Could not locate TLS/SSL package

["Ronald Warner" <cscrw@mail.dlsu.edu.ph>]

I am installing openldap-2.0.4 on redhat6.2

openssl0.9.5a is installed in /usr/local/ssl and ssl.h is in 
/usr/local/ssl/include/openssl/

for configure, I entered the following:
env CPPFLAGS="-I/usr/local/ssl/include/openssl" LIBS="-L/usr/local/ssl/lib" \
  ./configure --prefix=/usr/local/ldap --with-tls --enable-crypt --enable-wrappers

but I get the following:
checking for ssl/ssl.h... no
checking for ssl.h... no
configure: error: Could not locate TLS/SSL package

what am i doing wrong?

thanks for the help.